Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Shotgun
Frequency Response: 20-20,000 hz
Low Frequency Roll Off: 80 Hz, 18 dB/octave
Open Circuit Sensitivity:
Phantom: -40 dB (10.0 mV) re 1V at 1 Pa
Battery: -41 dB (8.9 mV) re 1V at 1 Pa
Maximum Input Sound Level:
Phantom: 129 dB SPL, 1 kHz at 1% T.H.D.
Battery: 115 dB SPL, 1 kHz at 1% T.H.D.
Phantom: 112 dB, 1 kHz at Max SPL
Battery: 98 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio: 77 dB, 1 kHz at 1 Pa
Phantom Power Requirements: 11-52V DC, 2 mA typical
Battery Type: 1.5V AA/UM3
Battery Current/Life: 0.4 mA / 1200 hours typical (alkaline)
Switches: Flat, roll-off (recessed)
Weight: 145 g (5.1 oz)
Dimensions: 279.0 mm (10.98") long, 21.0 mm (0.83") diameter
Output Connector: Integral 3-pin XLRM-type
Audio Technica AT897
Audio-Technica's AT897 is designed for field audio acquisition in film/TV/video production, professional recording, wildlife recording and broadcast applications. It mounts conveniently on a DV camcorder without adding noticeable heft, and remains out of the frame even with compact digital cameras. This high-performance short shotgun offers outstanding long-distance audio pickup due to narrow acceptance angle of line + gradient design. It also features smooth, natural-sounding on-axis audio quality and excellent off-axis rejection of sound arriving from the sides and rear of mic.
Audio-Technica's Line and Gradient Condenser Microphones combine a directional capsule ("gradient") and an interference tube which removes the sound from the rear. Generally, the interference tube of this type of microphone can be extended to reduce the acceptance angle and thus increase the sound capture distance. Short condenser microphones do not have as long a range as shotgun models, but in some cases are preferred for their greater acceptance angle, when the accuracy of the source is less important.